<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>注册界面</title>
</head>
<body>
  <h1>用户注册</h1>
  <form action="/register" method="POST">
    <label for="username">用户名:</label>
    <input type="text" id="username" name="username" required><br><br>

    <label for="password">密码:</label>
    <input type="password" id="password" name="password" required><br><br>

    <label for="email">邮箱:</label>
    <input type="email" id="email" name="email" required><br><br>

    <input type="checkbox" id="agree" name="agree" required>
    <label for="agree">我同意注册条款</label><br><br>

    <input type="submit" value="注册">
  </form>
</body>
</html>